piano keyboard

例句：

1. 1.The piano keyboard is the main instrument for playing classical music.
   钢琴键盘是演奏古典音乐的主要乐器。
2. 2. She spent hours practicing her piano skills on the piano keyboard.
   她花了很多小时在钢琴键盘上练习她的钢琴技巧。
3. 3. The piano keyboard is an essential tool for learning music theory.
   钢琴键盘是学习音乐理论的必备工具。